public static void UseFtp(this JobHostConfiguration config, FtpConfiguration ftpConfig = null)
        {
            if (config == null)
            {
                throw new ArgumentNullException(nameof(config));
            }

            if (ftpConfig == null)
            {
                ftpConfig = new FtpConfiguration();
            }

            config.RegisterExtensionConfigProvider(new FtpExtensionConfig(ftpConfig));
        }
 public FtpExtensionConfig(FtpConfiguration ftpConfig)
 {
     _ftpConfig = ftpConfig;
 }